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Director of Flight Crew Operations at Johnson Space Center George Abbey shakes hands with American NASA astronaut Brewster H Shaw Jr as the crew descends the steps from the Space Shuttle Atlantis, (bottom to top) American NASA astronaut Bryan D O'Connor, American NASA astronaut Sherwood C Spring, American NASA astronaut Mary L Cleave, American NASA astronaut Jerry L Ross, American NASA astronaut Charles D Walker and Mexican NASA astronaut Rodolfo Neri Vela, after the Shuttle had landed at Edwards Air Force Base in Kern County, California, 3rd December 1985. STS-61-B was NASA's 23rd Space Shuttle mission, and the second for Atlantis. (Photo by Space Frontiers/Archive Photos/Hulton Archive/Getty Images)